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Technical Features: - Easy-to-carry with magnetic belt - Easy-to-wear with watch size - Free App: Berry Smart Health - Use for SpO 2 , PR, ECG, RR, Nasal Airflow, Body position - Rechargeable battery with 10 hours continuous working - All data record on app and the report for sleep quality analysis - Size: 46.8(L)x33.6(W)x12.6(D)mm Optional Function :- AF, RR, PI
